Planooraph co



J'. W! MABsN.

FANNING MILLx APPLICATION FILEDAFAAR, 17. 1919.

atto/Lungo 'rlm coLuMnm PLANoUrz/.mx co.. wASHxNGTON, n. c.

l. W. MABIN.

FANNING MILL.

APPLICATION FILED MAR. I7. IQIQ.

3 SHEETS-SHEET 2.

GNN/Waco THE COLUMBIA PLANouIzAPH co.. WASHINGTON, D. c

j. W. MABIN.

FANNING MILL.

APPLICATION HLEDMAR. 17, |919.

Patentod J uly 8, 1919.

3 SHEETS-SHEET 3.

TME coLummA PLANoaRApM eo., wAsmNcn-N. D. c

JOI-IN W. MABIN, Ol RED WING, MINNESOTA.

FANNNG-MILL.

Specification of Letters Patent.

Application filed March 17, 1919.

To all eli/wm t may Concern.'

Be it known that l, Jol-N `W. MARIN, a citizen of the United States,residing at Reid Wing, in the county of Goodhue and State of Minnesota,have invented a new and useful Fanning-Mill, of which the following is aspecification.

This invention relates to improvements in fanning mills, the object ofthe invention being to provide a mill of this character adapted for theseparation of grain from straw and chatl', etc., and which mill isdustless in the operation thereof and so constructed that the goed grainwill be properly separated and delivered at a diillerent outletfrom thestraw and chaff.

A further object of the inventicn is to provide a mill of the characterset forth. which is comparativelyT simple in coi'istruction, economicalto manufacture and eX- tremely eflicient in operation.

TWith the foregoing and other objecte in view, which will appear as thedescription proceeds, the invention consists in the novel features ofconstruction and combination of parts, all of which will be more fullydescribed hereinafter and finallyY pointed out in the claims.

In the drawings accompanying and forining part of this specification,

Figure 1 is a side elevation of my iniproved fanning mill;

Fig, 2 is a top plan view thereof;

Fig. 3 is a longitudinal sectien on an enlarged scale, taken on the lineof Fig. 2, looking in the direction of the arrows;

Fig. 4 is a .f'ertical sectional view taken on the line -l of Fig. 1,looking in the direction of the arrows; and

Fig. 5 is a rear end elevation of the mill.

The same characters of reference desigA nate the same parts in thedifferent figures of the drawings.

Referring to the drawings, 2 designates the corner uprights or postsforming the framework to which the side walls 3 and end walls 4 aresecured. To the lower lorgitudinal edge of each of the side walls f3 issecured a member 5 which is inclined inwardly toward the center of thecasing. and secured to the innermost edge of each of these members 5 isa vertical wall 6 having a portion thereof extending` below saidmeinbers 5 and provided with a bottom 7, thereby forming a trough-shapedchannel S at Patented July 8, 1919.,

Serial No. 283,032.

the lower part of the casing. The upper edges of the walls 6 areinclined from front to rear of the easingv and secured to each of theseinclined edges is a horizoi'ital bar i), these bars forming between themau open slot 10 extending from the upper front ends of the walls G tothe lower rear ends thereof. Secured to the upper sides of the bars i),contiguous with the elges of the slot 10, are a pair of strips 12 havingsecured to their lower Yedges a piece of wire netting 11, which extendsover the top of the slot. The strips 12 thus form a vertical channel incommunication throughout its length with the slotV 1G, this channel alsocommunicating at its upper end with an opening formed in a front plate1-1- secured between the Side walls 3, and at its lower end passesthrough an Opening formed in the rear end wall t of the casing, thusforming a, continuous chute or channel from front te rear of the casing,as shown in Fig. 3. The outer edges of the bars 9 are spaced from theside walls of the casing, and each of the spaces so formed is covered bya piece of wire netting 13 secured at one of its edges to the bar 9 andat the opposite edge to the side wall 3. At one side of the channelformed by the strips 1Q, and iuunediz'rtely above one of the bars 9, thefront plate l-l is provided with an openingl 15, somewhat larger thanthe opening communicating with 'said channel, and the rear wall of thecasing is also provided with an opening` 16 having an inclined bottom 1Textending through the end wall 11A. said opening hein at a lower levelthan the channel formed by the strips 12. The rear end of the troughshaped channel S is closed by an end wall 18, and this wall extends upto the bars 9, the extreme ends of such bars being secured to the upperedge of this wall 18. whereby a space is left between the ends of thebars and the end wall 4 of the casing. he end wall 18 is spaced from theend wall el of the casing` by means of two opposite jv iucline-d strips19, shown in section in Fig. and in dotted lines in Fig. 5, theconverging` ends of the strips being secured to opposite sides of thebottom member 17 extending through the opening 16, and which bottonimember abuts at its inner end against the wall 18, whereby the opening1G is placed in communication with the spaces at each side of the strips12.

Between the front plate 14 and the front wall 4 of the casing, I providea bottom member 2O extending the full width of the casing, therebyforming a separate compartment communicating with the 'nterior oi' thecasing only through the openings in the front plate 14, and within thiscompartment are provided a pair of inclined chutes or hoppers, one ofwhich, as 21, is inclined from the front 'and sides thereof in suchmanner as to lead only to the central channel formed by the strips 12,the second chute 22 having its upper edge in close contact with thebottom of the chute 21 and so inclined as to lead only to the opening 15in the liront plate 14, the upper front edge of this chute 22 runningalong the front edge of the casing and ext-ending some distance beyondthe front edge of the chute 21, all as clearly shown in Fig. 3.

The main, or what I have termed the interior compartment of the casingis closed by a cover 32, the front end of which is located adjacent tothe upper edge orn the front plate 14, and in front of this cover andsupported over the upper end of the front compartment formed between thefront plate 14 and the front wall 4 of the casing, I provide a shaker,designated generally by the numeral 23, which consists in the presentinstance of a frame having rear and side members, the' upper edges ofthe side members being inclined downwardly toward the front oi' thecasing and provided with a piece of wire netting 24 secured thereto andto the rear member, as shown in Fig. 3. To each of the side members ofthe shaker is secured the upper end of a strip 25, which is pivoted, asat 26, to the side wall 3 of the casing, as shown in full lines in Fig.1 and in dotted lines in Fig. 3, one oi said strips being extendeddownwardly and bifurcated at its end so as to straddle an eccentric cam41 carried by the end of a shaft 37 which is j ournaleo in the sidewalls of the casing and on whirh shaft the tan is mounted, ashereinafter described, whereby, upon rotation of the shaft the shakerwill be rocked back and forth over the compartment above described.Above said shaker is a hopper, designated generally by the nu meral 27,so located as to deliver its charge to the rear upper portion of theshaker` This hopper comprises a pair of side walls secured to the top 32or" the main compartment, between which side walls are secured a pair ofmembers 23 inclined in opposite directions so as to form a narrow slotat their adjacent lower edges. A plate having a flange at its up 3eredge rests on the rear member 23 and is slidably 'secured thereto bymeans of a screw 30 passing through an elongated slot in the plate,whereby said plate adapted to be slid up and down the inclined face ofthe member 28, thereby to feed the grain on to the shaker, the upperedge of the member 23 being provided with a linger recess 31 forpermitting the i'iange of the plate 29 to be taken hold of for slidingsaid plate.

Vithin the lower front part of the ca'- ing I have provided fan chamber,this chamber being located within the space formed between the innervertical walls 6, each of said walls being provided with a circularopening, as shown at 33 in Fig. 3, for permitting free circulation ofthe currents of air created by the fan. rlhe i'an chamber is formed bymeans of a meta-l strip 34 secured at one end to the lower front edgesof the vertical walls 6, these edges being curved so as to form, with a,pair of segmental extensions 35 secured to the front of the casing, acircular frame around which the strip 34 is secured, the remainder ofthe strip being secured in close contact with the inner sides or thevertical walls 6, thereby forming a circular chainber for the rotationof the fan, he ends of the metal strip 34 being separated so as to placethe fan chamber in communi-cation with the trough-shaped chamber Shereinbefore described. Within this fan chamber is mounted for rotationon the shaft 37 a fan having suitably formed blades 3G. The shaft may beprovided at one end the-reci with a pulley 38 for attachment or' a beltwhereby motion may be imparted to the shaft 'from some convenientsoin-re ot' power (not shown). The air channel or chamber 8 may beprovided at its rear end with valves for the purpose of regulating thesupply of air for dierent kinds of grain. In the present instance I haveshown a pair o1 hinged doors 39, one at each side of the channel, eachof the doors beii-ig provided with a projection or rod extending at anangle therefrom and on which is mounted a weight 40 secured to said rodby a setscrew, so that the weight may be set on said rod at differentparts of its length, thereby oiler more or less resistance to theopening of the dooi` and the passage of air therethrough.

In the operation of the. mill. the shaft 3i' is caused to rotate, andtherebv the fan and shaker set in motion. Grain then placed in thehopper 27 and the plate 29 adjusted so as to feed such grain on to thenetting or screen 24 oinA the shaker, which is being rocked back andforth by mer of the cam 41. This causes the grain tc all through theopenings of the screen 24 rito the chute 21, being thereby fed down theinclined channel formed between the s ips 12, while the straws and chaffpass over W1e screen 24 and iall into the chute 22, 1which conducts themthrough 'the opening 15 in the front plate 14. ll/Ieanwhile` the v edoers 39 having been opened su'lhciently to supply the required amountof air through 'the lA l Lacasse channel 8, the air currents created bythe rotation of the fan pass up through the wire netting above the slotl() and blow all except the ,goed grain into the spaces at each side ofthe strips l2, the poor grain sliding' down the inclined surfaces ot thebars 9 and beine' led by means ot the inclined strips 19 out through theopening` it in the rear wall of the casing', the air ,passing Vthroughthe screens i3 back into the tan chamber.

From the iioregoing` it will be seen that l have provided a tanning'mill wnicli is to all intents and i'iurposes dustless, since the mainchamber7 where the tanningoperation takes place is entirely inclosed,and in which the grain is properly separated from the straw' and chaff,and while l have described in detail the structure herein illustrated`ll do not desire to limit my invention to the precise features ofconstruction shown, as ll am aware that many mechanical changes may bemade without departing Jfrom the spirit and scope et the invention asset Forth in the appended claims.

Having' thus described mv inventionn what l claim is:

l. A tanning' mill for separating' grain from straws and otherimpurities comprising an inclosing' easing' having' a main coinpartinentand a front conipartnicnt`v an inclined channel and an inclinedslide-wvav Within said main compartment, a pair o'f hoppers arranged insaid front compartment and communicating' respectivelj,v with saidchannel and slidewavj and n'ieans above said front compartment forseparating' the grain from the straw and other impurities and deliveringthe grain to one et said hoppers and the straw and other impurities tothe other of said hoppers.

2. A tanning mill for separatingv lgrain from. straw and otherimpurities` comprising' an inclosing casing` having a main compartmentand a front compartment, said main compartment beine' provided with pairet inlets and a pair of outletsa an inclined channel and an inclinedslid'ewajgfY within said main compartment and communicating'respectively with one of said inlets and with one of said outlets, apair of hoppers arranged in said front compartment and communicating'respectively with said inlets, and means above said front compartmentfor separating the I.grain Jfrom the straw and other impurities anddelivering` the grain to one of said hoppers and theJ straw and otherimpurities to the other ot said hoppers.

3. A tanning mill for separating` grain from straw and other impurities,comprit ing' an inclosiiig' casing' having a main compartment and afront compartment. an inclined channel and an inclined slideway withinsaid main compartment, a. pair of hoppers arranged in said lirontcompartment and commimicating` respectively with said channel andslideway, means aboire said front compartment for separating' the grainfrom the straw and other impurities and delivering' the grain to one cisaid hopper and the straw and other impurities to the other of saidhoppers, a fan chamber within said main compartment, and a rotatablymounted ian within said tan ch anbei' ier creating' air currents withinsaid compartment.

it tanning mill for separating' lgrain from straw and other impurities,comprisingr an inclosine` casing' having' a main coinpartinent and airont compartment, an inclined channel and an inclined slidenay withinsaid vtain cou'ipartment, a pair ont hoppers arranged in said trontcompt ment and communicating' rcspectivel ir witl said channel and slideway,means above said front compartment for separating' the lgrain from thestraw and other impurities and delivering' the er 'n to one or saidhoppers and the straw other impurities to the other of said hoppers, aian chamber within said main compartment, and a rotatably mounted fanwithin said fan chamber for creatine; air currents within saidcompartment, said main compartment beingv provided with avalve-controlled air chamber tor supplying ai to said fan. Y

[L fiminine' i tor separating' Vgrain from s tw and other impurities,comprising an inclosingi casingv having` a main coinpartnient and a.iront compartn'lent an inclined channel and an inclined slidewmv wit-hinsaid main coiniiartment. a pair of hoppers arranged in said frontcompartment and communicating respectively with said channel andslide/w( f'. and means aber@ said front compartment 'tor separating thel`qjrain from the straw and other impurities and delivering' the IQ'rainte one or said hoppers and the straw and other impurities to the otherof 'd hoppers said se;' means coinprisine' a scr-een adapted to berocked back and to above said 'liront conpartment.

6. A tanning mill for separating grain from. straw and other impurities,comprising` an inclosing casing having a main compartment and frontcompartment, an inclined channel and an inclined slideway within saidmain compartment7 a pair of hoppers arranged in said front compartmentand communicating respectively with said channel and slideway, meansabove said front compartment for separating the grain from the straw andother impurities and delivering the grain to one of said hoppers and thestraw and other impurities to the other of said hoppers, saidseparating` means comprising a screen adapted to be rocked back andforth above said Jfront compart- CII ment, and a hopper arranged abovesaid en and adapted -to deliver the grain,

sci straws and other impurities upon said screen.

7. A anning mill for separating grain from straw and other impurities,comprising an inclosing casing having a. main compartment and a frontcompartment, an inclined channel and an inclined slideway within saidmain compartment, a pair of hoppers arranged in said front compartmentand communicating respectively with said channel and slideway, rockablemeans above said front compartment for separating the grain from thestraw and other impurities and delivering the grain to one of saidhoppers and the straw and other impurities to the other of said hoppers,and means for rocking said separating means.

8. A tanning mill for separating grain from straw and other impurities,comprising an inclosing casing having a main compa-rtment and a 'lirontcompartment, an inclined channel and an inclined slideway within saidmain compartment, a pair of hoppers arranged in said front compartmentand communicating respectively with said channel and slideway, rockablemeans above said front compartment for separating the grain from thestraw and other impurities and delivering the grain to one of saidhoppers and the straw and other impurities to the other of said hoppers,a shaft rotatably mounted in said casing and carrying a fan within saidmain compartment, and means carried by said shaft for rocking saidseparating means.

9. A farming mill for separating grain from straw and other impurities,comprising an inclosing casing having a main compartment and a 1frontcompartment, a fan chamber within said main compartment, a ian rotatablymounted in said fan chamber, said main compartment being provided withan inclined channel and an inclined slideway in communication with saidfan chamber, means in said front compartment com` municatingrespectively with said channel and slideway for delivering the grain tothe channel and the straw and other impurities to the slidewa` and meansabove said lastnained means for separating the grain from the straw andother impurities.

l0. A tanning mill for separating grain from straw and other impurities,comprising an inclosing casing having a main compartment and a frontcompartment, a fan chanber within said main compartment, a shaitrotatably mounted in said main compartment, a fan secured to said shaftand adapted to rotate within said i'an chamber, said main compartmentlbeing' provided with an inclined channel and an inclined slideway incommunication with said fan chamber, means in said front compartmentcommunicating respectively with said channel and slideway for deliveringthe grain to the channel and the straw and other impurities to theslideway, i'oclable means above said last-named means for separating thegrain from the straw and other impurities, and means for rocking saidioclable means and comprising a pair 01' strips pivotally secured tosaid casing, and cooperating means carried by said shaft and one of saidstrips ior rocking the strip on its pivot.

ll. fr tanning mill for separating grain from straw and otherimpurities, comprising an inclosing casing having a main compartment anda front compartment, a fan chamber within said main compartment, a shaftrotatably mounted in said main compartment, a fan secured to said shaftand adapted to rotate within said fan chamber, said main compartmentbeing provided with an inclined channel and an inclined slide- "ay incommunication with said fan chamber, means in said front compartmentcommunicating respectively with said channel and slideway for deliveringthe grain to the channel and the straw and other impurities to theslideway, means above said last-named means for separating the grainfrom the straw and other impurities, said means comprising a rockablescreen, a pair of strips secured to said screen and pivotally secured tosaid casing, and a cam carried by said shaft and adapted to copera-tewith one of said strips for rocking the same on its pivot.

ln testimony that l claim 4the foregoing as my own, l have hereto aliXedmy signature in the presence of two witnesses.

JOHN vW. MABIN. lVitnesses:

THOMAS MOHN, REX A. HAcnns'rnoM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

